TutorChase logo
Decorative checklist book illustration
IB DP Biology Questions

10.2 Inheritance

Question 1

What is the primary consequence of genes being linked on the same chromosome?

A. They segregate independently during meiosis.

B. They tend to be inherited together.

C. They exhibit continuous variation.

D. They are controlled by multiple genes.

Question 2

Which type of variation is typically exhibited by polygenic traits?

A. Discrete variation

B. Continuous variation

C. Limited variation

D. No variation

Question 3

What is the purpose of a Chi-squared test in genetics?

A. To determine the linkage of genes.

B. To test the validity of a genetic hypothesis.

C. To identify polygenic traits.

D. To classify variation as discrete or continuous.

Question 4

How do unlinked genes behave during meiosis?

A. They segregate dependently.

B. They do not segregate.

C. They segregate independently.

D. They form tetrads.

Question 5

Which type of variation includes traits that have a limited number of phenotypes?

A. Continuous variation

B. Polygenic variation

C. Discrete variation

D. Dependent variation

Question 6

a) Explain how linked genes are inherited together during meiosis and provide an example of such genes. [4]

b) Describe how the chi-squared test can be used to determine whether the observed outcomes of a genetic cross match the expected outcomes. [3]

Question 7

a) Define discrete and continuous variation and give an example of a trait that exhibits each type of variation. [3]

b) Explain how polygenic traits contribute to continuous variation within a population. [4]

Question 8

a) Describe the principle of independent assortment and explain how it contributes to genetic diversity in offspring. [4]

b) Provide an example of a trait that is likely to be influenced by unlinked genes and explain why. [3]

Question 9

a) Explain the concept of gene linkage and how it affects the assortment of alleles during gamete formation. [4]

b) How does the location of genes on different chromosomes contribute to the independent assortment of genes? [3]

c) Why might a chi-squared test be applied in a study of inheritance and what would a significant result indicate? [3]

Question 10

a) Define polygenic traits and give an example. How do they contribute to continuous variation? [4]

b) Differentiate between discrete and continuous variation with examples. [3]

c) How does the random alignment of chromosomes during metaphase I of meiosis lead to genetic diversity? [3]

Question 11

What is the result of the independent segregation of unlinked genes during meiosis?

A. Decreased genetic diversity

B. Formation of tetrads

C. Increased genetic diversity

D. Linkage of genes

Question 12

Which of the following traits is most likely to be polygenic?

A. Blood type

B. Height

C. Presence of a genetic disorder

D. Eye colour

Question 13

What is the significance of genes being unlinked?

A. They are inherited together.

B. They exhibit discrete variation.

C. They segregate independently during meiosis.

D. They are located on the same chromosome.

Question 14

Which statistical tool is used to compare observed and expected outcomes in genetics?

A. T-test


C. Chi-squared test

D. Pearson correlation

Question 15

What type of variation is exhibited by traits such as skin colour and height?

A. Discrete variation

B. Continuous variation

C. Limited variation

D. Independent variation

Question 16

a) Describe the process and significance of crossing over in meiosis and how it affects linked genes. [4]

b) How does the principle of independent assortment apply to unlinked genes? Provide an example. [3]

c) Explain the use and interpretation of chi-squared tests in validating genetic hypotheses. [3]

Question 17

a) How do linked genes violate the principle of independent assortment? Provide an example. [3]

b) Discuss the role of multiple genes in determining polygenic traits and how this leads to continuous variation. [4]

c) In what scenarios in genetic studies might a chi-squared test be employed, and what conclusions can be drawn from its results? [3]

Question 18

a) Define the term “linked genes” and explain how the proximity of these genes on a chromosome affects their inheritance. [4]

b) Discuss the concept of independent assortment and how it leads to genetic diversity in the case of unlinked genes. Provide an example. [4]

c) Define continuous variation and discrete variation, providing an example for each. How do polygenic traits relate to continuous variation? [4]

d) Describe the procedure and purpose of conducting a chi-squared test in the context of genetics. What implications does a significant result have? [3]

Question 19

a) How does the phenomenon of gene linkage contradict Mendel’s principle of independent assortment? [3]

b) Explain the difference between discrete and continuous variation with examples, and discuss how environmental factors can influence continuous variation. [4]

c) How do polygenic traits contribute to the diversity of phenotypes within a population? Provide an example. [4]

d) Outline the steps involved in performing a chi-squared test in genetics and interpret the significance of the results. [4]

Question 20

a) Discuss the inheritance of linked genes and provide an example illustrating how their proximity on a chromosome affects phenotypic outcomes. [4]

b) Describe the principle of independent assortment and how it applies to genes located on different chromosomes. Provide an example. [4]

c) Define and differentiate between discrete and continuous variation, and explain how polygenic traits typically exhibit one of these variations. [4]

d) Explain the rationale behind using a chi-squared test in genetics, and discuss what conclusions can be drawn from a significant chi-squared value. [3]

Hire a tutor

Please fill out the form and we'll find a tutor for you.

1/2 About yourself
Still have questions?
Let's get in touch.